THERMAL-DECOMPOSITION OF CARBONATED HYDROXYAPATITES CONTAINING SODIUM-IONS

被引：23
|
作者：
ELFEKI, H
KHATTECH, I
JEMAL, M
REY, C
机构：
[1] FAC SCI TUNIS, DEPT CHIM, CAMPUS UNIV 1060, TUNIS, TUNISIA
[2] FAC SCI SFAX, DEPT CHIM, SFAX, TUNISIA
[3] CNRS, PHYSICOCHIM SOLIDES LAB, F-31400 TOULOUSE, FRANCE
来源：
THERMOCHIMICA ACTA | 1994年 / 237卷 / 01期
关键词：
D O I：
10.1016/0040-6031(94)85188-3
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
A series of carbonated hydroxyapatites containing sodium ions with variable amounts of carbonate were precipitated. Chemical analyses, infrared absorption spectrometry, X-ray diffraction patterns and thermogravimetry with gas chromatography analyses were performed. The results show two decomposition temperature intervals. These intervals correspond to dehydration and decarbonation processes. The latter phenomenon takes place in two steps. The first one corresponds to CO32- B type and the second one to CO32- B and A type decomposition processes.
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页码：99 / 110
页数：12
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